Home / 10,489.77-15,734.15-3,915.45

Finding the Fourth Proportional to 10,489.77, 15,734.15 and 3,915.45

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Solution

The fourth proportional to 10,489.77, 15,734.15 and 3,915.45 is: 5,872.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,489.77 : 15,734.15 = 3,915.45 : x
  2. Step 2: Convert to fraction form
    10,489.77/15,734.15 = 3,915.45/x
  3. Step 3: Cross multiply
    10,489.77x = 15,734.15 × 3,915.45
  4. Step 4: Simplify right side
    10,489.77x = 61,606,258.04
  5. Step 5: Solve for x
    x = 61,606,258.04/10,489.77
  6. Step 6: Final answer
    x = 5,872.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.